Judson Harvey

Jun 27, 2024 | science.org | Krishnan K Mahadevan |Dawid Zyla |Judson Harvey |Stephanie Kampf

PerspectiveHydrologyStreams that only flow occasionally are major contributors to river flowJudson W. Harvey [email protected] and Stephanie K. Kampf [email protected] Info & AffiliationsAbstractA river’s journey typically starts in temporary streams that flow sporadically when wet conditions prevail. During dry periods, streamflow slows and then stops as the waters recede below ground.

Mar 5, 2024 | pubs.usgs.gov | Judson Harvey

First posted March 5, 2024 This report identifies key scientific gaps that limit our ability to predict water quality effects on health of aquatic ecosystems and proposes approaches to address those gaps. Topics considered include (1) coupled nutrient-carbon cycle processes and related ecological-flow-regime drivers of ecosystem health, (2) anthropogenic and geogenic toxin bioexposure, (3) fine sediment drivers of aquatic ecosystem health, and (4) freshwater salinization.

Feb 14, 2024 | nature.com | Judson Harvey

AbstractMetabolism estimates organic carbon accumulation by primary productivity and removal by respiration. In rivers it is relevant to assessing trophic status and threats to river health such as hypoxia as well as greenhouse gas fluxes. We estimated metabolism in 17 rivers of the Illinois River basin (IRB) for a total of 15,176 days, or an average of 2.5 years per site.